Inter digital capacitor - epoxy

Hi,
I need design equation for Inter digital capacitor, to be designed in epoxy substrate, for my project...
If anyone has the equtaion or know where to get it, pls help me..
Thank you in advance

Hello angu,


Here are the very good articles & papers on Interdigital capacitors...

Reference Article
B. Bazdar, A.R. Djordjevic, R.F. Harrington, and T.K. Sarkar,
"Evaluation of quasi-static matrix parameters for multiconductor transmission lines
using Galerkin's method," IEEE Trans. Microwave Theory Tech., vol. MTT-42, July 1994, pp. 1223-1228

Interdigital Capacitors and Their Application to Lumped-Element Microwave Integrated Circuits
Alley, G.D.; Microwave Theory and Techniques, IEEE Transactions on
Volume 18, Issue 12, Dec 1970 Page(s):1028 - 1033

Reference Book
Mongia, R., Bahl, I. and Bhartia P., RF and Microwave Coupled-Line Circuits,
Artech House Inc., Norwood, MA, 1999, pp.370-372


Also AWR Microwave Office (MWO) has good Interdigital Microstrip Models,
see the attached picture file...

---manju---